Add special keys handling

board/miyoo/main/apps/usb-hid/usb-hid.py

@@ -7,20 +7,21 @@
 108:81, #down
 105:80, #left
 106:79, #right
-29:29, #b mapped to z
-56:27, #a mapped to x
-57:4, #y mapped to a
-42:22, #x mapped to s
+29:1, #b mapped to l_ctrl
+56:44, #a mapped to space
+57:2, #y mapped to l_shift
+42:27, #x mapped to x
 1:42, #select mapped to backspace
 28:40, #start mapped to enter
-15:20, #lpad1 mapped to q
-14:26, #rpad1 mapped to w
+15:4, #lpad1 mapped to l_alt
+14:43, #rpad1 mapped to tab
 104:75, #lpad2 mapped to pg_up
 109:78, #rpad2 mapped to pg_down
 97:0, #reset not mapped, used to quit
 }
 
 NULL_CHAR = chr(0)
+SPECIAL_KEY_CODES=[1,2,4]
 def write_report(report):
     with open('/dev/hidg0', 'rb+') as fd:
         fd.write(report.encode())
@@ -31,12 +32,25 @@ def translate(code, dictonary):
     return 0
 
 def write_pressed_keys(e):
-    line = ''.join(chr(translate(code,hidCodeDict)) for code in keyboard._pressed_events)
-    if line == '':
+    print('\r', end='')
+    all_keys=[translate(code,hidCodeDict) for code in keyboard._pressed_events]
+    if not len(all_keys):
         write_report(NULL_CHAR*8)
         return
-    print('\r', end='')    
-    write_report(NULL_CHAR*2+line+NULL_CHAR*5)
+
+    special_keys=0
+    for s_key in SPECIAL_KEY_CODES:
+        if s_key in all_keys:
+            all_keys.remove(s_key)
+            special_keys += s_key
+
+    if not len(all_keys):
+        write_report(chr(special_keys)+NULL_CHAR*7)
+        return
+
+    keys =''.join(chr(key) for key in all_keys)            
+    write_report(chr(special_keys)+NULL_CHAR+keys+NULL_CHAR*5)
+
 
 print("Press RESET button to quit")
 keyboard.hook(write_pressed_keys)